The XPS 13 9343 utilizes the Microsoft Precision Touchpad specification in I2C mode. The specific feature within the Microsoft Precision Touchpad specification is the “Confidence” feature:

Confidence

Confidence is used to indicate that the contact does not have any dimensions (height or width) > 25mm that implies that it is not an unintended contact. Windows Precision Touchpads should not reject any contacts in firmware processing, but should forward all contacts to the host and indicate the confidence. After a device has deemed a contact to be unintentional, it shall clear the confidence bit for that contact report and all subsequent reports. Until a contact has been deemed unintentional, the device shall set the confidence bit for that contact being reported.

With that feature correctly implemented, palm rejection in I2C mode should work.

Driver feature development is something we work with our vendors on ensuring they develop, though in this case they won’t since the Microsoft Precision Touchpad specification is a feature that falls outside of vendor-specific needs. Synaptics (or any other touchpad vendor) is unlikely to implement this feature in the Linux i2c_hid driver because it’s not vendor-specific but instead a Microsoft specification.

In addition to the recent fixes I posted for the XPS 13 developer edition, here is one more from the team.

thanks

Broadcom bug

Some customers may experience an issue where their system crashes when switching wireless networks while running the factory install of Ubuntu 14.04. The issue appears to be a bug within the Broadcom wireless driver. You can follow the bug report at the following link:

The other day Canonical came to Dell for a show and tell. The Sputnik team, normally located in various buildings in Austin and Round Rock, all found ourselves in attendance at the event. Here is a quick meet-the-team video introducing ourselves, saying where we’re from and declaring our favorite TV show.

Additionally, here is a short case study giving the Project Sputnik history.

We are aware of some issues that need to be addressed with our XPS 13 developer edition. While patches have been made available (or coming soon), we are working to add these fixes to the systems at the factory.

Given that we want our customers to have the best experience possible, we have temporarily stopped new sales of the XPS 13 developer edition. Our desire is to bring back the system as soon as possible, but only after we have resolved the outstanding issues at the factory level. [Please realize that this DOES NOT AFFECT the windows version of the XPS 13]

We apologize for the inconvenience and thank you for your support and patience.

Once again we want to thank the entire community for your posts containing feedback and questions to the Dell TechCenter forum and this blog regarding the Ubuntu-based XPS 13 and M3800 developer editions.

Last month we posted links to four knowledge base articles addressing: wireless drivers, keyboard repeat, suspend/resume and cursor freezes. Today we are adding three more that have been hot topics recently: creating recovery media, OOBE crashing, and 15.04 UEFI install. So we have all the articles in one place I have also included the previous ones below.

Knowledge Base links:

How to create recovery media for the XPS 13 9343 and Precision M3800 Developer Editions:

Remember, in addition to posting your feedback here, we encourage customers to utilize their support contracts and contact the included Dell support (either Consumer Support or ProSupport, depending on whether you purchased it from the Consumer or Small Business sections). This will help us to officially track issues and tackle them systematically.

Remember, in addition to posting your feedback here, we encourage customers to utilize their support contracts and contact the included Dell support (either Consumer Support or ProSupport, depending on whether you purchased it from the Consumer or Small Business sections). This will help us to officially track issues and tackle them systematically.

Please continue to give us your feedback on the Developer Edition systems.